Orangeboard

Hey dude I was looking for laser alarmas systems and i found this one http://www.instructables.com/id/make-your-very-own-laser-burglar-alarm/#step1 but there you say you wanted to put a similar one but yours sound everytime and don´t stop. i was wondering if you can put it 'cause it is very helpfully to me. So thanks for read this

you can look at my instructable " Laser Sensor Timer " The second sensor's circuit latches itself. Instead of it going to the stopwatch, it can turn on a siren circuit to make the siren go off. I'll make a instructable about that when I have time. Hope this helps! Send me some thing if you still don't understand.